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| author | Will Deacon <will.deacon@arm.com> | 2012-03-28 14:42:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-28 17:14:36 -0700 |
| commit | d034cfab4f7b9e768c5c1caaa56c5bd4805d2b92 (patch) | |
| tree | dd696a4873b3c6207d5818c91bbc92771f0e5d4d /kernel/kexec.c | |
| parent | 7d7f98488b203cbf78538698cf5d937f670d96d3 (diff) | |
| download | lwn-d034cfab4f7b9e768c5c1caaa56c5bd4805d2b92.tar.gz lwn-d034cfab4f7b9e768c5c1caaa56c5bd4805d2b92.zip | |
kexec: crash: don't save swapper_pg_dir for !CONFIG_MMU configurations
nommu platforms don't have very interesting swapper_pg_dir pointers and
usually just #define them to NULL, meaning that we can't include them in
the vmcoreinfo on the kexec crash path.
This patch only saves the swapper_pg_dir if we have an MMU.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index a6a675cb9818..769e347c5196 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1462,7 +1462,9 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_SYMBOL(init_uts_ns); VMCOREINFO_SYMBOL(node_online_map); +#ifdef CONFIG_MMU VMCOREINFO_SYMBOL(swapper_pg_dir); +#endif VMCOREINFO_SYMBOL(_stext); VMCOREINFO_SYMBOL(vmlist); |